Staff Backend Engineer (B2B - Warsaw)

Location: Warsaw, Poland — Hybrid (4 days on-site / 1 day remote)
Contract: B2B · 25–42 k PLN net / month + RSUs
Fresha: Shaping the Future of Beauty & Wellness
Join Fresha, the leading marketplace platform transforming the beauty and wellness industry globally. With over 120,000 businesses and 450,000 stylists trusting our platform, we've powered over 1 billion appointments worldwide. Fresha empowers businesses with an all-in-one platform for bookings, point-of-sale, marketing, and more, while connecting consumers to local services.
At Fresha, we believe AI is a force multiplier for feature delivery, not just a coding assistant. We provide every engineer with top-tier tooling (Claude, GitHub Copilot, Cursor) to strip away technical toil—so you can focus your energy on shipping high-impact product features. We value engineers who know how to leverage these tools to drive momentum within our 6-week cycles, accelerating the journey from concept to code while maintaining the deep technical judgment to verify, secure, and own the final user experience. 
Your Impact as a Staff Backend Engineer
Are you ready to make a significant impact in a fast-paced, autonomous environment? We're seeking an exceptional Staff Backend Engineer to join our cross-functional product team in Warsaw.
What You'll Do:
* Technical - this is a heavily technical role; hands-on coding skills are expected. It’s not a management role
* Leadership - Own and deliver cross-team and cross tribal technical initiatives
* Architectural - Take ownership of architecture for a tribe
* Guidance - Sought out for technical guidance; anticipating technical issues at the product level and making architectural and design decisions to avoid them
* Improvements - Create sweeping improvements in stability, performance and scalability across major business-critical systems
* Delivery - Ensure timely delivery of your team’s projects, which will ultimately have a tangible impact on Fresha’s success
* Lead-by-example - Make sure your team follows our engineering practices by leading from the front
* Collaboration - Work closely with diverse functions within the team across Product, Design, Data and QA and make sure that the team has clear goals and regularly delivers value to our users
* Learning - Facilitate continuous learning and improvement for your team
* Standards - Make sure that the systems your team owns meet Fresha quality, reliability and scalability standards
* Innovative - You will be anticipating broad technical changes and ensuring Fresha is always ahead of the curve
* Strategic - Recognising and making trade-offs concerning the whole system. You have a deep understanding of the entire architecture for a significant part of our business, and you’re able to articulate clearly the scaling and reliability limits of that area.
* Multiplier - Primarily acting as a multiplier by building systems, authoring tools or introducing policies or patterns that raise the level of productivity of the entire organisation
* Communication - Communicating the awesomeness of Fresha in different Tech communities externally via talks and blog posts, identifying areas that we can share effectively with the outside world, guiding the creation of content and communication around those areas. Leading conversations internally about the direction of significant areas of technology, driving wide-team consensus on the adoption of this direction and using this direction to inspire engineers
This list is not exhaustive, and there may be other activities you are required to deliver. 

What we are looking for

• AI-Augmented Workflow: You have deep experience building and interacting with AI agents, using them to amplify your output to 5x that of manual coding. You are able to integrate agents into our workflow while strictly adhering to our architecture and security standards, taking full accountability for ensuring all generated code meets the quality expectations of a Senior Engineer.
• Delivery - You have consistently delivered large systems involving one or more teams’ contributions on time at a high level of quality
• Problem-solving - You’ve had to quickly break down complex problems into potential solutions, knowns, and unknowns, in order to get a solid resolution faster
• Debugging - You’re capable of debugging the hairiest problems that the team encounters
• Strategy - Played a key role in developing multi-year technology strategy for complete and critical areas of the business that encompass multiple systems and teams
• Adaptability - You have created an architecture that enables many potential futures without knowing exactly what the future is
• Relationships - Ability to interact with people from across the business and build strong relationships, including the ability to effectively influence upwards
• Facilitation - Listened and guided debates to help reach consensus; once a decision is made clearly communicate the decision(s) back
• Planning - Set short to medium-term strategic technical direction, able to look ahead 6-12 months identify areas of greatest need and create plans to improve them
• Mentorship - You’re seen as a role model and mentor to every technical member of the team
• Contribution - Recognised as a prolific contributor to core and side projects
• Simplification - Consistently reduced the complexity of projects, services, and processes to get more done with less work
• Architecture - Shaped broad architecture; shipped multiple large services, complex libraries or major pieces of infrastructure
• Impact - Made obvious positive impact on an entire company’s technical trajectory
• Team-player - Happy to roll sleeves up and assist the team when required (team player)
• Proactive - Self-starter and proactive approach
• Adaptive - Comfortable working in a fast-paced and changing environmentAt Fresha, we value passion and potential as much as specific skills. If you're enthusiastic and eager to learn, we encourage you to apply, even if you don't meet every listed requirement. We believe in fostering growth and providing the support needed for you to excel in your role.
  

Why Join Fresha?

• Real Impact: Directly influence our product and architecture in a rapidly growing global business.
• Cutting-Edge Tech: Work with modern technologies and contribute to a significant migration to microservices.
• Dynamic Culture: Be part of a team that encourages autonomy and innovation.

Don't meet every requirement? We value passion and potential. Apply today and let's grow together!

Benefits

• Taking part in the decision making process of migration to microservices.
• Learn how to design, deploy and maintain complex applications.
• Help us to introduce other technologies such as serverless services, SQS, continuous delivery and deployment and more.
• Hybrid work (4 days in the office per week)
• Flexi-time (around core hours)
• Competitive salaries & RSUs
• 20 days PTO
• Travel coverage when visiting teammates - through workshops and social events

Interview Process

• Screen Stage - Video-call with a member from the Talent Team (45-60min)
• 1st Stage - Technical video/In-person interview with the team (60min)
• 2nd Stage - Technical Video/In-person interview with Team (up to 2 hours)
• Final Stage - Video interview with Head of Engineering / VP of Engineering /CTO (60min)

We aim to complete the entire interview process and deliver feedback within 4 weeks.
Every job application received is reviewed manually by our talent team. While we strive to assess applications within 7 days, the sheer volume of talented individuals expressing interest may occasionally extend this timeframe